63 lines
1.2 KiB
C
Executable File
63 lines
1.2 KiB
C
Executable File
#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <errno.h>
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#include <sys/wait.h>
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void
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str_to_ll(char *str, long long *num)
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{
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errno = 0;
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char *endptr;
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*num = strtoll(str, &endptr, 10);
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if (*endptr || errno || endptr == str) {
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fprintf(stderr, "Invalid number: %s\n", str);
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exit(1); // TODO: по-хорошему заменить на внешний обработчик ошибок
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}
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return;
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}
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int
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main(int argc, char *argv[])
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{
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if (argc != 2) {
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fprintf(stderr, "Usage: %s <deepth>\n", argv[0]);
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return 1;
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}
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long long deepth;
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str_to_ll(argv[1], &deepth);
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// long long i = 1;
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// while (deepth > 0) {
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// printf("Deepth: %lld\n", i++);
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// if (deepth == 1) {
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// break;
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// }
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// if (!fork()) {
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// deepth--;
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// } else {
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// wait(NULL);
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// break;
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// }
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// }
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for (int i = 1; i <= deepth; i++) {
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if (i == deepth || fork() > 0) {
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wait(NULL);
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printf("Deepth: %d\n", i);
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break;
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}
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}
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return 0;
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}
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